/* -------------------------------- 

Primary style

-------------------------------- */
*, *::after, *::before {
    -webkit-box-sizing: border-box;
    -moz-box-sizing: border-box;
    box-sizing: border-box;
}

html {
    font-size: 62.5%;
}

body {
    font-size: 1.6rem;
    font-family: "Slabo 27px", serif;
    color: #ffffff;
    background-color: #131d20;
}

body::before {
    /* never visible - this is used in jQuery to check the current MQ */
    content: 'mobile';
    display: none;
}

@media only screen and (min-width: 1170px) {
    body::before {
        /* never visible - this is used in jQuery to check the current MQ */
        content: 'desktop';
    }
}

a {
    color: #e3ca76;
    text-decoration: none;
}

/* -------------------------------- 

Main Components 

-------------------------------- */
@media only screen and (min-width: 1170px) {
    .cd-section {
        height: 100vh;
    }
}

.cd-section h1 {
    position: relative;
    top: 50%;
    -webkit-transform: translateY(-50%);
    -moz-transform: translateY(-50%);
    -ms-transform: translateY(-50%);
    -o-transform: translateY(-50%);
    transform: translateY(-50%);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-align: center;
    font-size: 2.6rem;
}

@media only screen and (min-width: 768px) {
    .cd-section h1 {
        font-size: 3.2rem;
        line-height: 1.8;
    }
}

@media only screen and (min-width: 1170px) {
    .cd-section h1 {
        font-size: 4.2rem;
    }
}

.cd-block, .cd-half-block {
    -webkit-transform: translateZ(0);
    -moz-transform: translateZ(0);
    -ms-transform: translateZ(0);
    -o-transform: translateZ(0);
    transform: translateZ(0);
    -webkit-backface-visibility: hidden;
    backface-visibility: hidden;
}

.cd-block {
    -webkit-transform-origin: center center;
    -moz-transform-origin: center center;
    -ms-transform-origin: center center;
    -o-transform-origin: center center;
    transform-origin: center center;
}

.cd-section:first-of-type .cd-block {
    visibility: visible;
    height: 100vh;
    background-color: #263b40;
}

@media only screen and (min-width: 1170px) {
    .cd-block {
        position: fixed;
        width: 100%;
        min-height: 100vh;
        top: 0;
        left: 0;
        height: 100vh;
        box-shadow: 0 0 40px rgba(0, 0, 0, 0.7);
        visibility: hidden;
    }

    .cd-section:first-of-type .cd-block {
        visibility: visible;
    }

    .cd-block > * {
        visibility: visible;
    }
}

.cd-half-block {
    background: #ffffff;
    color: #263b40;
}

.cd-half-block:nth-of-type(1) {
    height: 60vh;
    background-color: #263b40;
    background-position: center center;
    background-repeat: no-repeat;
}

.cd-half-block:nth-of-type(2) {
    padding: 4em 10%;
}

.cd-half-block p {
    font-size: 1.8rem;
    line-height: 1.8;
}

.cd-section:nth-of-type(2) .cd-half-block:first-of-type {
    background-image: url("https://gitee.com/AmosWang/3d-curtain/raw/master/img/img-1.jpg");
    background-size: cover;
}

.cd-section:nth-of-type(3) .cd-half-block:first-of-type {
    background-image: url("https://gitee.com/AmosWang/3d-curtain/raw/master/img/img-2.jpg");
    background-size: cover;
}

.cd-section:nth-of-type(4) .cd-half-block:first-of-type {
    background-image: url("https://gitee.com/AmosWang/3d-curtain/raw/master/img/img-3.jpg");
    background-size: cover;
}

@media only screen and (min-width: 1170px) {
    .cd-half-block {
        height: 100vh !important;
        width: 50%;
        position: absolute;
        top: 0;
    }

    .cd-half-block p {
        position: absolute;
        left: 50%;
        top: 50%;
        bottom: auto;
        right: auto;
        -webkit-transform: translateX(-50%) translateY(-50%);
        -moz-transform: translateX(-50%) translateY(-50%);
        -ms-transform: translateX(-50%) translateY(-50%);
        -o-transform: translateX(-50%) translateY(-50%);
        transform: translateX(-50%) translateY(-50%);
        width: 100%;
        padding: 0 25%;
        font-size: 2.4rem;
    }

    .cd-section:nth-of-type(even) .cd-half-block:first-of-type, .cd-section:nth-of-type(odd) .cd-half-block:nth-of-type(2) {
        left: 0;
        -webkit-transform: translateX(-100%);
        -moz-transform: translateX(-100%);
        -ms-transform: translateX(-100%);
        -o-transform: translateX(-100%);
        transform: translateX(-100%);
    }

    .cd-section:nth-of-type(odd) .cd-half-block:first-of-type, .cd-section:nth-of-type(even) .cd-half-block:nth-of-type(2) {
        right: 0;
        -webkit-transform: translateX(100%);
        -moz-transform: translateX(100%);
        -ms-transform: translateX(100%);
        -o-transform: translateX(100%);
        transform: translateX(100%);
    }
}

.cd-vertical-nav {
    position: fixed;
    z-index: 1;
    right: 3%;
    top: 50%;
    bottom: auto;
    -webkit-transform: translateY(-50%);
    -moz-transform: translateY(-50%);
    -ms-transform: translateY(-50%);
    -o-transform: translateY(-50%);
    transform: translateY(-50%);
    display: none;
}

.cd-vertical-nav a {
    display: block;
    height: 40px;
    width: 40px;
    /* image replace */
    overflow: hidden;
    text-indent: 100%;
    white-space: nowrap;
    background: transparent url(../img/cd-icon-arrow.svg) no-repeat center center;
    -webkit-transition: opacity 0.2s 0s, visibility 0.2s 0s;
    -moz-transition: opacity 0.2s 0s, visibility 0.2s 0s;
    transition: opacity 0.2s 0s, visibility 0.2s 0s;
}

.cd-vertical-nav a.cd-prev {
    -webkit-transform: rotate(180deg);
    -moz-transform: rotate(180deg);
    -ms-transform: rotate(180deg);
    -o-transform: rotate(180deg);
    transform: rotate(180deg);
    margin-bottom: 10px;
}

.cd-vertical-nav a.inactive {
    visibility: hidden;
    opacity: 0;
    -webkit-transition: opacity 0.2s 0s, visibility 0s 0.2s;
    -moz-transition: opacity 0.2s 0s, visibility 0s 0.2s;
    transition: opacity 0.2s 0s, visibility 0s 0.2s;
}

@media only screen and (min-width: 1170px) {
    .cd-vertical-nav {
        display: block;
    }
}

.filing {
    width: 100%;
    bottom: 3vh;
    color: #fff;
    text-align: center;
    position: absolute;
    text-decoration: none;
}

.copyright-text {
    display: inline-flex;
    -webkit-box-align: center;
    align-items: center;
}